Brooke MuellerDenise Is the Best Mom for My Boys Right Now

5/4/2013 1:10 PM PDT

Brooke Mueller -- Denise Richards Is the Best Mom for My Boys Right Now

EXCLUSIVE

Brooke Mueller is thankful Denise Richards is the one watching her boys while she's getting professional help ... and sources close to Brooke tell TMZ she's glad they ended up with Denise ... instead of her own mother.

As we previously reported, Mueller's 4-year-old twins with Charlie Sheen, Bob and Max, were taken Thursday night after the L.A. County D.C.F.S. decided Mueller's home was an "unsafe environment" due to her suspected drug use.

According to our sources, Brooke feels Denise is a great parent and will give her boys everything they need while she seeks help. We're told Brooke is grateful to Denise and knowing her boys are in good hands is allowing her to focus on herself and get better.

We're told the decision to leave the kids with Denise did not sit well with Brooke's mother, who felt she should have taken them. But our sources say the boys have never spent extended time with Brooke's mother and Brooke is glad that DCFS placed them with Denise (not to mention their half-sisters as well).